Yammer CEO says he won’t hire anyone from Yahoo who doesn’t quit in next 60 days

David Sacks, the CEO of Yammer, is pissed. Last month he was hit with his first lawsuit from a patent troll. So when he saw that Yahoo was going after Facebook for patent infringement, he drew a line in the sand (well, on Twitter to be precise): “I’m declaring it: Yammer will never hire another former Yahoo employee who doesn’t leave in the next 60 days. Who will join me? #stopyahoo”

Smart grid startups compete for highly variable venture funding

Venture capital industry interest and investment in smart grid startups has been up and down over the past five years, ranging from a peak of nearly $316 million in 2009 to around $100 million or less in 2011 (as of the end of September). There’s reason to be optimistic about the future growth of the sector, however. Powerful fundamental factors — the shift to cleaner, renewable energy sources and market deregulation among them — continue to support growth, as do smart grid proponents and technology providers.

DEMO Spring features more global startups, networking

DEMO Spring 2012 is returning to Silicon Valley April 17-19 to rock the technology landscape—and put investors face-to-face with quality dealflow from around the world. Register for the 2-day DEMO conference from this post and enjoy a special VentureBeat registration rate of $850 (a savings of more than 50%), good through March 20.

As legal battle with TV networks escalates, Aereo launches in NYC — We tested it, and it rocks

I’m sitting in my office (by which I mean my kitchen) watching Rachel Ray on my iPad and Kathy Lee on my laptop. These aren’t clips or day or old episodes. It’s live programming that’s streaming to me via Aereo, the web TV service locked in a legal battle with the big TV networks, which launches to the public in New York City this morning.